Today, we celebrated a monumental achievement in human history: For the first time, we landed an object on a comet. And xkcd creator Randall Munroe celebrated by creating this cartoon flipbook starting three hours before Philae's separation from Rosetta and ending with the landing.

For the first time in human spacefaring history, a robotic probe has been placed on the surface of…
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"Landing" is a series of 142 frames following the probe's separation and landing on Comet 67P. If you want to go through the frames at your own pace and carefully read all of the thoughts from the anthropomorphized Philae, Rosetta, 67P, and Mission Control, you can flip through the series here. Plus, Munroe has thrown in some whales for good measure. After all, Philae was supposed to harpoon that comet.